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Genrish500 [490]
3 years ago
11

What is the approximate percent change in a temperature then went down from 120゚ to 100゚ the person changes approximately 17% th

e percent change is approximately 20% the percent change is approximately 80% the percent change is approximately 120
Mathematics
1 answer:
Zanzabum3 years ago
6 0

Answer:

The answer is 17%

explanation:

One way to find percents is to multiply the number you're trying to find the percent of (120) by whatever percent you're looking for (0.17, 0.2, 0.8, etc) If you multiply 120*0.17, you'll get about 20, which is how much was the amount of degrees lost.

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The point V(-2,-1) is reflected over the y-axis. What are the coordinates of the resulting point, V’?
krok68 [10]

Answer:

(2,-1)

Step-by-step explanation:

i think it's that.

4 0
3 years ago
Solve the system of linear equations by substitution.<br><br>−2x−5y=3<br> 3x+8y=−6
Sliva [168]
First you want to know what y or x is i chose y for this on 

so the equation i'm going to use is -2x-5y=3
i want to solve for y

-2x-5y=3
+2x        +2x

-5y=2x+3
 /-5   /-5  /-5
y=-2/5x+-3/5

Now that i solved for y we substitute our answer into the next equation to solve for x like this:

3x+8y=-6
3x+8(-2/5x+-3/5)=-6
3x+ -3.2x+-4.8=-6
-0.2x+-4.8=-6
          +4.8  +4.8
-0.2x=-1.2
/-0.2    /-0.2
x=6

After you know what x is you substitute it in for any of the equations that we started with. I picked 3x+8y=-6 to find y.

3x+8y=-6
3*6+8y=-6
18+8y=-6
-18      -18
8y=-24
/8     /8
y=-3

Since we know what x and y are we substitute it with any of the equations that we started with. i picked -2x-5y=3

-2*6-5*-3=3
-12- -15=3
3=3 
so our solution (6,-3) works 

6 0
3 years ago
F(x)= 2-1/x<br>g(x)= x/2<br><br>what is f(g(x))?
kompoz [17]
To find f(g(x)), plug g(x) into f(x) and simplify.

f(x/2) = 2 - 1/(x/2)

All you have to do is simplify the right side of the equation.

Take it from here.



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Answer:

Step-by-step explanation:

3 0
3 years ago
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Two corresponding sides of two similar pentagons are 14 cm and 21cm
ivolga24 [154]
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8 0
4 years ago
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